IBM TotalStorage DS300 Best Practices Manual page 657

SNMP agent An implementation of a network
management application which is resident on a
managed system. Each node that is to be monitored
or managed by an SNMP manager in a TCP/IP
network, must have an SNMP agent resident. The
agent receives requests to either retrieve or modify
management information by referencing MIB
objects. MIB objects are referenced by the agent
whenever a valid request from an SNMP manager is
received.
SNMP manager A managing system that executes
a managing application or suite of applications.
These applications depend on MIB objects for
information that resides on the managed system.
SNMP trap A message that is originated by an
agent application to alert a managing application of
the occurrence of an event.
Software zoning Is implemented within the Simple
Name Server (SNS) running inside the fabric switch.
When using software zoning, the members of the
zone can be defined with: node WWN, port WWN, or
physical port number. Usually the zoning software
also allows you to create symbolic names for the
zone members and for the zones themselves.
SQL Structured Query Language.
SSA See Serial Storage Architecture.
Storage administrator A person in the data
processing center who is responsible for defining,
implementing, and maintaining storage
management policies.
Storage Area Network A managed, high-speed
network that enables any-to-any interconnection of
heterogeneous servers and storage systems.
Striping A method for achieving higher bandwidth
using multiple N_Ports in parallel to transmit a single
information unit across multiple levels.
Subagent A software component of SAN products
which provides the actual remote query and control
function, such as gathering host information and
communicating with other components. This
component is platform dependent. See also SAN
agent.
Subsystem Device Driver The Subsystem Device
Driver is a multipathing software designed especially
to use with the IBM Enterprise Storage Server 2105.
It cannot be used with any other storage servers or
storage devices.
Subsystem masking The support provided by
intelligent disk storage subsystems like the
Enterprise Storage Server. See also LUN masking
and port zoning.
SVC See SAN Volume Controller.
Switch A component with multiple entry and exit
points or ports that provide dynamic connection
between any two of these points.
Switch topology A switch allows multiple
concurrent connections between nodes. There can
be two types of switches, circuit switches and frame
switches. Circuit switches establish a dedicated
connection between two nodes. Frame switches
route frames between nodes and establish the
connection only when needed. A switch can handle
all protocols.
T
TCP See Transmission Control Protocol.
TCP/IP Transmission Control Protocol/Internet
Protocol - a set of communications protocols that
support peer-to-peer connectivity functions for both
local and wide area networks.
Topology An interconnection scheme that allows
multiple Fibre Channel ports to communicate. For
example, point-to-point, arbitrated loop, and
switched fabric are all Fibre Channel topologies.
639
Glossary